Traffic Collision Causes Major Delays in San Dimas

Traffic Collision on State Route 57 South in San Dimas Causes Delays Today

📍 San Dimas, CA

📅 Published: August 6, 2025 at 04:34 PM

Map showing the location of the accident in San Dimas, CA
San Dimas, August 6, 2025 -

A traffic collision on State Route 57 South in San Dimas, CA, caused notable traffic disruptions today during the afternoon commute. The incident involved two vehicles, including a Chevrolet 3500 shuttle bus, which resulted in one vehicle blocking the on-ramp and the other obstructing the fourth lane. This situation led to delays and congestion for drivers in the area.

Emergency response teams quickly arrived to manage the scene. Traffic management efforts included lane closures and rerouting instructions to help alleviate the backup. Initially, a tow truck was requested for the shuttle bus, but this request was later canceled as one vehicle was successfully removed from the roadway.

By approximately 4:21 PM, the roadway was cleared, allowing traffic to resume more smoothly. Multiple units worked diligently to control the scene and ensure the safe clearance of the roadway.

Motorists traveling through San Dimas are advised to remain cautious and aware of potential residual delays as traffic returns to normal. This traffic incident highlights the importance of safe driving practices and the impact of collisions on overall traffic flow.

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